/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * lustre/mgc/mgc_request.c
- * Lustre Management Client
+ * GPL HEADER START
*
- * Copyright (C) 2006 Cluster File Systems, Inc.
- * Author: Nathan Rutman <nathan@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
*
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/mgc/mgc_request.c
+ *
+ * Author: Nathan Rutman <nathan@clusterfs.com>
*/
#ifndef EXPORT_SYMTAB
#include <obd_class.h>
#include <lustre_dlm.h>
+#include <lprocfs_status.h>
#include <lustre_log.h>
#include <lustre_fsfilt.h>
#include <lustre_disk.h>
+#include "mgc_internal.h"
static int mgc_name2resid(char *name, int len, struct ldlm_res_id *res_id)
{
int mgc_fsname2resid(char *fsname, struct ldlm_res_id *res_id)
{
/* fsname is at most 8 chars long, maybe contain "-".
- * e.g. "lustre", "CFS-000" */
+ * e.g. "lustre", "SUN-000" */
return mgc_name2resid(fsname, strlen(fsname), res_id);
}
EXPORT_SYMBOL(mgc_fsname2resid);
int len;
/* logname consists of "fsname-nodetype".
- * e.g. "lustre-MDT0001", "CFS-000-client" */
+ * e.g. "lustre-MDT0001", "SUN-000-client" */
name_end = strrchr(logname, '-');
LASSERT(name_end);
len = name_end - logname;
}
/********************** config llog list **********************/
-static struct list_head config_llog_list = LIST_HEAD_INIT(config_llog_list);
+static CFS_LIST_HEAD(config_llog_list);
static spinlock_t config_list_lock = SPIN_LOCK_UNLOCKED;
/* Take a reference to a config log */
/* Find a config log by name */
static struct config_llog_data *config_log_find(char *logname,
- struct config_llog_instance *cfg)
+ struct config_llog_instance *cfg)
{
struct list_head *tmp;
struct config_llog_data *cld;
spin_lock(&config_list_lock);
list_add(&cld->cld_list_chain, &config_llog_list);
spin_unlock(&config_list_lock);
-
+
if (rc) {
config_log_put(cld);
RETURN(rc);
RETURN(rc);
}
+DECLARE_MUTEX(llog_process_lock);
+
/* Stop watching for updates on this log. */
static int config_log_end(char *logname, struct config_llog_instance *cfg)
{
/* drop the ref from the find */
config_log_put(cld);
+ down(&llog_process_lock);
cld->cld_stopping = 1;
+ up(&llog_process_lock);
+
/* drop the start ref */
config_log_put(cld);
CDEBUG(D_MGC, "end config log %s (%d)\n", logname ? logname : "client",
static int rq_state = 0;
static cfs_waitq_t rq_waitq;
-static int mgc_process_log(struct obd_device *mgc,
+static int mgc_process_log(struct obd_device *mgc,
struct config_llog_data *cld);
+static int mgc_requeue_add(struct config_llog_data *cld, int later);
static int mgc_requeue_thread(void *data)
{
ENTRY;
ptlrpc_daemonize(name);
-
+
CDEBUG(D_MGC, "Starting requeue thread\n");
lwi_later = LWI_TIMEOUT(60 * HZ, NULL, NULL);
spin_lock(&config_list_lock);
while (rq_state & (RQ_NOW | RQ_LATER)) {
/* Any new or requeued lostlocks will change the state */
- rq_state &= ~(RQ_NOW | RQ_LATER);
+ rq_state &= ~(RQ_NOW | RQ_LATER);
spin_unlock(&config_list_lock);
- /* Always wait a few seconds to allow the server who
+ /* Always wait a few seconds to allow the server who
caused the lock revocation to finish its setup, plus some
random so everyone doesn't try to reconnect at once. */
lwi_now = LWI_TIMEOUT(3 * HZ + (ll_rand() & 0xff) * (HZ / 100),
NULL, NULL);
l_wait_event(rq_waitq, rq_state & RQ_STOP, &lwi_now);
-
+
spin_lock(&config_list_lock);
list_for_each_entry_safe(cld, n, &config_llog_list,
cld_list_chain) {
- spin_unlock(&config_list_lock);
+ spin_unlock(&config_list_lock);
if (cld->cld_lostlock) {
- CDEBUG(D_MGC, "updating log %s\n",
+ CDEBUG(D_MGC, "updating log %s\n",
cld->cld_logname);
cld->cld_lostlock = 0;
rc = mgc_process_log(cld->cld_mgcexp->exp_obd,
cld);
- /* Whether we enqueued again or not in
- mgc_process_log, we're done with the ref
- from the old enqueue */
+ /* Whether we enqueued again or not in
+ mgc_process_log, we're done with the ref
+ from the old enqueue */
config_log_put(cld);
}
spin_lock(&config_list_lock);
}
spin_unlock(&config_list_lock);
-
+
/* Wait a bit to see if anyone else needs a requeue */
l_wait_event(rq_waitq, rq_state & (RQ_NOW | RQ_STOP),
&lwi_later);
/* spinlock and while guarantee RQ_NOW and RQ_LATER are not set */
rq_state &= ~RQ_RUNNING;
spin_unlock(&config_list_lock);
-
+
CDEBUG(D_MGC, "Ending requeue thread\n");
RETURN(rc);
}
{
int rc = 0;
- CDEBUG(D_INFO, "log %s: requeue (l=%d r=%d sp=%d st=%x)\n",
+ CDEBUG(D_INFO, "log %s: requeue (l=%d r=%d sp=%d st=%x)\n",
cld->cld_logname, later, atomic_read(&cld->cld_refcount),
cld->cld_stopping, rq_state);
/* Hold lock for rq_state */
spin_lock(&config_list_lock);
- cld->cld_lostlock = 1;
if (cld->cld_stopping || (rq_state & RQ_STOP)) {
spin_unlock(&config_list_lock);
RETURN(0);
}
+ cld->cld_lostlock = 1;
+
if (!(rq_state & RQ_RUNNING)) {
LASSERT(rq_state == 0);
rq_state = RQ_RUNNING | (later ? RQ_LATER : RQ_NOW);
/* We take an obd ref to insure that we can't get to mgc_cleanup
without calling mgc_fs_cleanup first. */
- class_incref(obd);
+ class_incref(obd, "mgc_fs", obd);
label = fsfilt_get_label(obd, mnt->mnt_sb);
if (label)
l_dput(cli->cl_mgc_configs_dir);
cli->cl_mgc_configs_dir = NULL;
pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
- class_decref(obd);
+ class_decref(obd, "mgc_fs", obd);
}
cli->cl_mgc_vfsmnt = NULL;
break;
case OBD_CLEANUP_EXPORTS:
if (atomic_dec_and_test(&mgc_count)) {
- /* Kick the requeue waitq - cld's should all be
+ /* Kick the requeue waitq - cld's should all be
stopping */
spin_lock(&config_list_lock);
rq_state |= RQ_STOP;
spin_unlock(&config_list_lock);
cfs_waitq_signal(&rq_waitq);
}
- break;
- case OBD_CLEANUP_SELF_EXP:
rc = obd_llog_finish(obd, 0);
if (rc != 0)
CERROR("failed to cleanup llogging subsystems\n");
break;
- case OBD_CLEANUP_OBD:
- break;
}
RETURN(rc);
}
/* Only for the last mgc */
class_del_profiles();
+ lprocfs_obd_cleanup(obd);
ptlrpcd_decref();
rc = client_obd_cleanup(obd);
static int mgc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
{
+ struct lprocfs_static_vars lvars;
int rc;
ENTRY;
if (rc)
GOTO(err_decref, rc);
- rc = obd_llog_init(obd, NULL, obd, 0, NULL, NULL);
+ rc = obd_llog_init(obd, &obd->obd_olg, obd, 0, NULL, NULL);
if (rc) {
CERROR("failed to setup llogging subsystems\n");
GOTO(err_cleanup, rc);
}
+ lprocfs_mgc_init_vars(&lvars);
+ lprocfs_obd_setup(obd, lvars.obd_vars);
+
spin_lock(&config_list_lock);
atomic_inc(&mgc_count);
if (atomic_read(&mgc_count) == 1) {
cfs_waitq_init(&rq_waitq);
}
spin_unlock(&config_list_lock);
-
+
RETURN(rc);
err_cleanup:
}
/* Are we done with this log? */
if (cld->cld_stopping) {
- CDEBUG(D_MGC, "log %s: stopping, won't requeue\n",
+ CDEBUG(D_MGC, "log %s: stopping, won't requeue\n",
cld->cld_logname);
- config_log_put(cld);
+ config_log_put(cld);
break;
}
/* Make sure not to re-enqueue when the mgc is stopping
!lock->l_conn_export->exp_obd->u.cli.cl_conn_count) {
CDEBUG(D_MGC, "log %s: disconnecting, won't requeue\n",
cld->cld_logname);
- config_log_put(cld);
+ config_log_put(cld);
break;
}
/* Did we fail to get the lock? */
struct ptlrpc_request *req;
struct mgs_send_param *req_msp, *rep_msp;
int size[] = { sizeof(struct ptlrpc_body), sizeof(*req_msp) };
- int rep_size[] = { sizeof(struct ptlrpc_body), sizeof(*msp) };
+ __u32 rep_size[] = { sizeof(struct ptlrpc_body), sizeof(*msp) };
int rc;
ENTRY;
{
struct config_llog_data *cld = (struct config_llog_data *)data;
struct ldlm_enqueue_info einfo = { type, mode, mgc_blocking_ast,
- ldlm_completion_ast, NULL, data};
+ ldlm_completion_ast, NULL, NULL, data};
int rc;
ENTRY;
rc = ldlm_cli_enqueue(exp, NULL, &einfo, &cld->cld_resid,
NULL, flags, NULL, 0, NULL, lockh, 0);
- /* A failed enqueue should still call the mgc_blocking_ast,
- where it will be requeued if needed ("grant failed"). */
+ /* A failed enqueue should still call the mgc_blocking_ast,
+ where it will be requeued if needed ("grant failed"). */
RETURN(rc);
}
RETURN(rc);
}
-int mgc_reconnect_import(struct obd_import *imp)
-{
- /* Force a new connect attempt */
- ptlrpc_invalidate_import(imp);
- /* Do a fresh connect next time by zeroing the handle */
- ptlrpc_disconnect_import(imp, 1);
- /* Wait for all invalidate calls to finish */
- if (atomic_read(&imp->imp_inval_count) > 0) {
- int rc;
- struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
- rc = l_wait_event(imp->imp_recovery_waitq,
- (atomic_read(&imp->imp_inval_count) == 0),
- &lwi);
- if (rc)
- CERROR("Interrupted, inval=%d\n",
- atomic_read(&imp->imp_inval_count));
- }
-
- /* Allow reconnect attempts */
- imp->imp_obd->obd_no_recov = 0;
- /* Remove 'invalid' flag */
- ptlrpc_activate_import(imp);
- /* Attempt a new connect */
- ptlrpc_recover_import(imp, NULL);
- return 0;
-}
-
int mgc_set_info_async(struct obd_export *exp, obd_count keylen,
void *key, obd_count vallen, void *val,
struct ptlrpc_request_set *set)
ptlrpc_import_state_name(imp->imp_state));
/* Resurrect if we previously died */
if (imp->imp_invalid || value > 1)
- mgc_reconnect_import(imp);
+ ptlrpc_reconnect_import(imp);
RETURN(0);
}
/* FIXME move this to mgc_process_config */
- if (KEY_IS("register_target")) {
+ if (KEY_IS(KEY_REGISTER_TARGET)) {
struct mgs_target_info *mti;
if (vallen != sizeof(struct mgs_target_info))
RETURN(-EINVAL);
rc = mgc_target_register(exp, mti);
RETURN(rc);
}
- if (KEY_IS("set_fs")) {
+ if (KEY_IS(KEY_SET_FS)) {
struct super_block *sb = (struct super_block *)val;
struct lustre_sb_info *lsi;
if (vallen != sizeof(struct super_block))
}
RETURN(rc);
}
- if (KEY_IS("clear_fs")) {
+ if (KEY_IS(KEY_CLEAR_FS)) {
if (vallen != 0)
RETURN(-EINVAL);
rc = mgc_fs_cleanup(exp->exp_obd);
switch (event) {
case IMP_EVENT_DISCON:
/* MGC imports should not wait for recovery */
- ptlrpc_invalidate_import(imp);
break;
case IMP_EVENT_INACTIVE:
break;
}
case IMP_EVENT_ACTIVE:
LCONSOLE_WARN("%s: Reactivating import\n", obd->obd_name);
+ /* Clearing obd_no_recov allows us to continue pinging */
+ obd->obd_no_recov = 0;
break;
case IMP_EVENT_OCD:
break;
RETURN(rc);
}
-static int mgc_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
+static int mgc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
struct obd_device *tgt, int count,
struct llog_catid *logid, struct obd_uuid *uuid)
{
int rc;
ENTRY;
- rc = llog_setup(obd, llogs, LLOG_CONFIG_ORIG_CTXT, tgt, 0, NULL,
+ LASSERT(olg == &obd->obd_olg);
+
+ rc = llog_setup(obd, olg, LLOG_CONFIG_ORIG_CTXT, tgt, 0, NULL,
&llog_lvfs_ops);
if (rc)
RETURN(rc);
- rc = llog_setup(obd, llogs, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
+ rc = llog_setup(obd, olg, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
&llog_client_ops);
if (rc == 0) {
ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
- ctxt->loc_imp = obd->u.cli.cl_import;
+ llog_initiator_connect(ctxt);
+ llog_ctxt_put(ctxt);
+ } else {
+ ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
+ if (ctxt)
+ llog_cleanup(ctxt);
}
RETURN(rc);
static int mgc_llog_finish(struct obd_device *obd, int count)
{
- int rc;
+ struct llog_ctxt *ctxt;
+ int rc = 0, rc2 = 0;
ENTRY;
- rc = llog_cleanup(llog_get_context(obd, LLOG_CONFIG_REPL_CTXT));
- rc = llog_cleanup(llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT));
+ ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
+ if (ctxt)
+ rc = llog_cleanup(ctxt);
+
+ ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
+ if (ctxt)
+ rc2 = llog_cleanup(ctxt);
+
+ if (!rc)
+ rc = rc2;
RETURN(rc);
}
upon successful completion. */
OBD_ALLOC(temp_log, strlen(logname) + 1);
- if (!temp_log)
+ if (!temp_log)
RETURN(-ENOMEM);
sprintf(temp_log, "%sT", logname);
if (rc)
GOTO(out, rc);
rc = llog_init_handle(local_llh, LLOG_F_IS_PLAIN, NULL);
- if (rc)
+ if (rc)
GOTO(out, rc);
rc = llog_destroy(local_llh);
llog_free_handle(local_llh);
struct client_obd *cli = &obd->u.cli;
LASSERT(cli);
LASSERT(cli->cl_mgc_configs_dir);
- rc = lustre_rename(cli->cl_mgc_configs_dir, temp_log, logname);
+ rc = lustre_rename(cli->cl_mgc_configs_dir, cli->cl_mgc_vfsmnt,
+ temp_log, logname);
}
CDEBUG(D_MGC, "Copied remote log %s (%d)\n", logname, rc);
out:
RETURN(rc);
}
-DECLARE_MUTEX(llog_process_lock);
-
/* Get a config log from the MGS and process it.
This func is called for both clients and servers. */
static int mgc_process_log(struct obd_device *mgc,
CERROR("Missing cld, aborting log update\n");
RETURN(-EINVAL);
}
- if (cld->cld_stopping)
+
+ /* I don't want mutliple processes running process_log at once --
+ sounds like badness. It actually might be fine, as long as
+ we're not trying to update from the same log
+ simultaneously (in which case we should use a per-log sem.) */
+ down(&llog_process_lock);
+
+ if (cld->cld_stopping) {
+ up(&llog_process_lock);
RETURN(0);
+ }
- OBD_FAIL_TIMEOUT(OBD_FAIL_MGC_PROCESS_LOG, 20);
+ OBD_FAIL_TIMEOUT(OBD_FAIL_MGC_PAUSE_PROCESS_LOG, 20);
lsi = s2lsi(cld->cld_cfg.cfg_sb);
ctxt = llog_get_context(mgc, LLOG_CONFIG_REPL_CTXT);
if (!ctxt) {
CERROR("missing llog context\n");
+ up(&llog_process_lock);
RETURN(-EINVAL);
}
- /* I don't want mutliple processes running process_log at once --
- sounds like badness. It actually might be fine, as long as
- we're not trying to update from the same log
- simultaneously (in which case we should use a per-log sem.) */
- down(&llog_process_lock);
-
/* Get the cfg lock on the llog */
rcl = mgc_enqueue(mgc->u.cli.cl_mgc_mgsexp, NULL, LDLM_PLAIN, NULL,
LCK_CR, &flags, NULL, NULL, NULL,
"\n", cld->cld_logname);
GOTO(out_pop, rc = -ENOTCONN);
}
- LCONSOLE_WARN("Failed to get MGS log %s, using "
- "local copy.\n", cld->cld_logname);
+ CDEBUG(D_MGC, "Failed to get MGS log %s, using local "
+ "copy for now, will try to update later.\n",
+ cld->cld_logname);
}
/* Now, whether we copied or not, start using the local llog.
If we failed to copy, we'll start using whatever the old
log has. */
+ llog_ctxt_put(ctxt);
ctxt = lctxt;
}
copy of the instance for the update. The cfg_last_idx will
be updated here. */
rc = class_config_parse_llog(ctxt, cld->cld_logname, &cld->cld_cfg);
-
- out_pop:
+out_pop:
+ llog_ctxt_put(ctxt);
+ if (ctxt != lctxt)
+ llog_ctxt_put(lctxt);
if (must_pop)
pop_ctxt(&saved, &mgc->obd_lvfs_ctxt, NULL);
class_unregister_type(LUSTRE_MGC_NAME);
}
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Management Client");
MODULE_LICENSE("GPL");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff